Lens and mounting therefor.



S. GALLISON.

LENS AND MOUNTING THEREFOR. APPLICATION FILED FEB. 26, 1912.

Patented Dec. 10, 1912.

- for said lens, of simple,

owed to thelens or detached there SPURGEON CALLISON, E DEXTER, IOWA.

LENS AND MOUNTING THEREFOR.

To ail whom it may concern."

Be it hown that I, Srunenon CALLISO'N, a citizen of the United States,residing at Dexter, in the county of Dallas and State of Iowa, haveinvented a new and useful Lens and idem-sting Thereior, of which thefollowing is a specification.

The object of my device is to provide a lens of special construction,and a mounting durable, and inexpensive construction, so made that themounting may be quickly and readily serom, which mounting detachablygrips the lens firmly and securely.

It is a further object to provide a lens and a mounting therefor, soconstructed that the lens may be detached from or attached to themounting, without the use of screws or the like, or of tools, the lensbeing firmly held in the mounting by spring pressure.

A further object is to provide a lens and a detachable mountingtherefor, which mounting and lens can be made in certain standard sizes,so that the mountingsof the same size, may be secured to lenses ofvarious thicknesses.

My invention consists in certain details, in the construction,arrangement and combination of the various parts, whereby the objectscontemplated are attained, as hereinafter more fully set forth, pointedout in my claims, and illustrated in the accompanying drawings, in whichFi ure 1 shows a side elevation of a lens and a detachable mountingthereon, em-- bodyin my invention. Fig. 2 shows an end view of said lensand mounting, the latter being shown partly in section. Fig. 3 shows acentral, horizontal, sectional view through my improved lens andmounting therefor. Fig. 42 shows a detail, plan view of my improvedmounting. Fig. 5 shows a side elevation of my improved lens. Fig. 6shows a central, vertical, sectional view of the body of the mounting.Fig. 7 shows an end elevation of the spring metal loop detached from thebody.

My improved mounting and lens are designed to be used for eye-glasses,and spectacles, and the mounting may be used for securing the lens tothe nose piece or to .a temple.

It is to be noted that my lens is rimless and is detachably secured tomy improved mounting.

Specifieation of Letters Patent. Application filed February 26, 1912.Serial a... 680,083.

viewed from the shoulder.

Patented Dec. 1% 912..

In the accompanying drawing, 1 have used the reference numeral 10, toindicate generally, a lens struction, excepting that my lens is providedwith an extension or enlarged portion 11 at one or both ends, as may bedesired. At each end of the extension 11, said an tension forms ashoulder 12, with relation to the body of the lens.

My mounting consists of a body 13, which may be provided with a lug 14,and an opening t5 therein or any suitable means for securing themounting to a nose piece or a temple, and is also provided with a curvedslot 16, designed to receive between its sides the extension 11 of thelens. The bottom of the slot 16 is curved from side to side, as shown inFig. i, and the slot is also curved from end to end, as shown in Fig. 6.On the outer surface of each side of the body 13, is a transverse, oove17, designed to receive the sides 0% the loop hereinafter mentioned.

The body 18 is preferably made of annealed metal, so its sides may bepressed toward each other. In this connection, it is to be noted thatthe mountings are preferabliy made in standard sizes and that the b0 y13 is made of annealed metal, in order that its free ends may be pressedtoward each other toclosely engage the sides of the eiztension 11 of alens, thus enabling me to closely grip lenses of tween the sides oft hegrooves 16. I mount an endless loop 18 on the lugs 17. Before the loop18 is secured to the mounting, it an end elevation, its sides are Theinner sides of preferably curved mounted is-thinapproximately parallel.the ends of the loop are so that if the lens'to be ner than the mountingit may be bent together easily without danger of breaking, andso that ifthe shoulders are square, the loop engages the shoulders at twopoints'regardless of the-thickness of the lens, while if the shoulder isrounded, the end of the loop engages and rests against the end ofThe'sides of the loop 18 are mounted at their centers in the grooves 17,and are secured to the lugs 16. The sides of the loop at the pointswhere they are secured to the body 13, are provided with notches so thatthe outer portions of the sides of the loop-are approximately flush withthe outer sides of the body 13 when the loop is mounted on said body. enviewed in side elevarying thickness bei which is of ordinary contheextension 11, will be hereinafter more fully set forth.

. The sides of the loops, preferably taper from a maximum thickness attheir centers to a minimum thickness at their ends.

When my mounting is completed, it may be detachably secured to the lens10, by placing the .extension 11 in the slot 16,

'as shown in Fig. 3, with one of the having a loops 18 engaging one ofthe shoulders 12'. The other end of said loop 18 is then pressed overthe other shoulder. The length the lens, the sides of said loop, willextend along the sides of the extension 11, adjacent to the outer edgethereof, as shown in Fig. 1. The loops 18 are of resili ent metal, andon account of their curvature, with relation to the curvature of theextension 11, when secured to the lens, they grip the same firmly, andalso fitclose to the outer edge of the extension 11. The length of theloops 18 with relation to the length of the outer edge of the extension,is such that when the loops are mounted on the lens with their endsaround the shoulders 12, said loops stand in the position shown in Fig.1, as above set forth. In drawing the ends of the loop 18 around theextreme point of the shoulders 12, the sides of theloop on each side ofthe mounting, are for an instant drawing to a curvature less than thecurva ture of the extension 11, so that if viewed in side elevation, theextension 11 would extend between the sides of the loop 18, and

slightly beyond the same. The advantage of loop instead of a solid piecewith a slot therein, is now madeclear. If the sides of the loop whichengaged-the end of the extension 11, the loop could not be made tostraddle the extension 11 for the purpose of mounting it thereon. Thenormal form of the loop and its resiliency tend to draw it to theposition shown in Fig. 1, as soon as it is mounted on the lens, and totoward each other and the size of the loop with relation to the lens issuch that when mounted on the lens, the loop holds the lens firmly.against the body 13,'between the sides of the slot 16, as shown in Fig.3.

It will be seen that the loop 18, on account of being secured onboth'sides of the bod 13, forms practically two loops, one exten ing inone direction, and the'other in the other direction from the body 13.

My lenses and mountings are made in standard sizes. The length of theloop in the standard size of the mounting is such that it wilhfit snuglythe/thinnest lens of The purpose of making thev fore be seen of the loop18, is such that when were connected .by a portion draw the ends of theloop a good appearance,

ig ove formed therein end of .an eye-glass lens, said which is securedto (me the standard size, designed to be used with that particular sizeof mounting. if a thicker lens of the standard size is used with thatparticular size of mounting, the shoulders 12 may be slightly cut awayby filing or other means, so that the loop will be long enough to fitthe size may be used with a lens which is standard as to length andwidth and curvature in outline, but varying in thickness. I considerthis feature ofmy invention to be of great advantage, insomuch as lensesare commonly made in standard sizes as to circumference and curvaturebut varying considerably in thiclmess. It will be seen that when themounting is used with a comparalens, from one side to the other of theslot 16. The fact that the bottom of the groove 16 is curved from sideto side enables me to firmly grip the lens between the bottom of saidgroove and the ends of the loop. The body 13 is made of annealed metal,so that it may be easily pressed against the sides of the outer edge ofthe extension 11, regardless of the thickness of the lens. It appearstherefore, that when my mounting is proplens used. It will there-' thata mounting of standard the latter will not extend erly attached to mylens, the latter will be engaged by the body 13, between the sides ofthe slot 16,by the inner surfaces of the said sides and by the sides andends of the loop 18.

The advantages of a device of this kind,

are numerous. The from the mounting without the use of tools, andwithout the use of screws. Extra lenses may be carried, and may beplaced in the mounting when a lens is broken. The lens is firmly securedin the mounting, and is not subject to lateral play or vertical play,which causes a very common objection to the ordinary forms of mountingsnow in use. It will be seen theta large number of variations may be madein details of construction of my device, without many way departing fromits essential purpose. The lens may be quickly, and easily secured inthe mounting, or detached therefrom, attached to the mounting is engagedthereby at several points, and is mounted: and

firmly held in the proper position. a The polens is easily detached andwhen w sition of the loop 18 with relation to the extension 11, givesthe lens and the mounting and almost wholly conceals the extension 11,giving the lens the appearance of a perfect ellipse.

I claim as my invention:

.1. In a device of the class described, a lens mounting comprisin a bodyhaving a esigned to fit the groove being incurved from side to side andalsofrom end to end, a loop of sprin metal, one side of side of saidbody and the ends of which are designed to engage shoulders on a lens.

2. In a device of the class described, a mounting, comprising a bodyhaving a groove formed therein, designed to fit the curved end of alens, one side of which is secured to each side of said body, and theends of which are designed to engage shoulders on a lens.

3. In a device of thezclass described, the combination of a lens,havingan'enlarged portion at one end, which forms shoulders withreference to the bod of the lens, a mounting comprising a body, having agroove in one surface designed to receive said enlarged portion of thelens, an endless spring metal loop, the sides'of which are secured tothe outer sides of said body and the ends of which engage saidshoulders.

4. In a device of the class described, the combination of a lens, havingan enlarged portionat one end, which forms shoulders with reference tothe body of the lens, a .mounting comprising a body, having a slotformed therein, to receive the edge of the enlarged portion of the lens,an endless loop of resilient metal, one side of which is secured on theouter sides of the body, the rea loop of spring metal,

spective ends of which loop detachably engage the said shoulder, withthe sides of .each end of the loop adjacent to the sides of saidenlarged portion at the outer edge thereof.

5. In a device of the class described, the, I

combination of a lens, having an enlarged portion at one end, whichforms shoulders with reference to the body. of the lens, with a mountingcomprising a body of resilient metal having a groove formed'thereindesigned to receive the edge of the enlarged portion of the-lens, anelongated endless loop of resilient metal, two internal ortions of whichare secured to the outer sides of said body, the respective ends ofwhich loop detachably receive the said shoulders, said loop beingarranged to normally stand in position with its sides parallel, andcurved but having normally greater curvature than the outer edge. ofsaid enlarged portion.

Des Moines, Iowa, January 2, 1912.

SPURGEON CALLISON. Witnesses: V

. GEORGE A. CRANE,-

CHARLES CRANE.

